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http://dx.doi.org/10.5000/EESK.2006.10.1.033

Optimal Design of Friction Dampers based on the Story Shear Force Distribution of a Building Structure  

Jung, Je-Won (세명대학교 자원환경공학과 대학원)
Kim, Jun-Kyoung (세명대학교 자원환경공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.1, 2006 , pp. 33-39 More about this Journal
Abstract
Parameters including the seismic sources and the elastic wave propagation characteristics were analysed using the observed ground motions from 3 Kyoungju region earthquakes. The Levenberg-Marquardt algorithm was applied to invert all the variables non-linearly and simultaneously with S wave energy In frequency domain. Average stress drop of 3 events and local attenuation parameter ${\kappa}$ were estimated to about 48-bar and 0.0312 respectively. Regional attenuation parameter, Qo and ${\eta}$, were also estimated to be about 417 and 0.83. ${\kappa}$ values are much higher than that of EUS, even though smaller than that of WUS. All these values resultant from this study show that there are differences in some parameters of other studios due to differences in the governing equation. of acceleration motions
Keywords
Levenberg-Marquardt algorithm; ${\kappa}$; Qo; ${\eta}$; stress drop;
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